Invention Grant
US07680056B2 Apparatus and method for extracting a test signal section from an audio signal 有权
用于从音频信号中提取测试信号部分的设备和方法

Apparatus and method for extracting a test signal section from an audio signal
Abstract:
For extracting signal test sections conforming to an auditory test from an audio signal, in particular for non-intrusive tests for a quality assessment of a transmission system, first of all a temporal structure of the audio signal is parsed in order to differentiate an information-carrying section of the audio signal from a preceding non-information-carrying section of the audio signal or a subsequent non-information-carrying section of the audio signal. Hereupon, a test signal section is generated based on the information-carrying section of the audio signal. Thus, test signal sections conforming to an auditory test are obtained, on the one hand determining the comparability with other auditory tests and, on the other hand, reducing a too inaccurate assessment of the transmission system based on system-immanent artefacts.
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